What is the main difference between OSN 7500 and OSN 7500 II?

Dear Pelusa0316！

At first, there are obvious differences in the appearance of the device.

7500-II:                                                                                7500:

           

Second, the size and capacity of the equipment are also different.

you can use this comparison tool to view：

http://support.huawei.com/onlinetoolweb/einfoplus/Compare/portal?type=product&lang=en

I want to add some information which maybe useful for you .
- OSN 7500 supports Ethernet service in form of Ethernet over SDH , while OSN 7500II supports Ethernet as pure PTN product .
that because it has capability in its cross connect to work in pure TDM and pure packet .
- donot forget that means that u will often need pair of fiber for SDH services other than the pair used for Ethernet in each direction.

hmmm

Very Good

good

Nice

Thanks for sharing